AXE SVN Sync is a PHP5 tool that mirrors two SVN repositories by reproducing each and every commit. It's useful when it's not possible to perform other mirroring or synchronization. It works on two working copies and advances the destination up to the source.

AgileSCM is an application lifecycle management solution for Subversion, Git, and Mercurial. It allows you to spend more time developing and less time fighting development tools or tied up with administration. AgileSCM is a user friendly, browser-based interface which abstracts developers from the complications of SVN, Mercurial, and Git.

Antmod is a build management, release
management, and repository management
tool. Its implementation is an Ant-based
extensible engine for retrieving, versioning,
building, and deploying code to and from
Subversion or CVS. It standardizes build files
for Java projects and provides build plugins for
various tasks. It also standardizes tagging
and branching for both CVS and Subversion,
and its module and repository management
can also be used for non-Java projects. It
greatly speeds up Java software
development, promotes reuse of Java
software, and standardizes the build-test-
release cycle.

FishEye opens your source code repository to help you understand your code and keep tabs on the people who write it. It lets you view user activity, track code changes, and search and navigate through your repository from any Web browser. Nearly everything in your repository has its own URL, down to every single line of code for every revision. Files, branches, repositories, projects, and even people have their own activity stream. FishEye provides easy navigation, powerful search, historical reporting, configurable file annotation and diff views, changeset analysis, RSS feeds, and integration with JIRA, Crucible, Bamboo, Eclipse, and IntelliJ IDEA. FishEye works with Subversion, CVS, Perforce, Git or Mercurial.

BelowVersion is a single-file Python CGI to browse
a Subversion repository. It only needs a Web
server with Python support and bindings for
Subversion libraries. It bypasses the high-level
client library for acceptable performance without
losing features. It is written to be fast to
navigate with mouse, both within a single revision
and between revisions. It can provide revision
logs, colored diffs, and a side-by-side view for
image revisions. It can also serve the files like
a normal (static) Web server, allowing plain view
or saving to disk. It is written to be embeddable
in other Web applications with little effort
(explained in the source).

BitNami JRubyStack provides a fast, easy way to
develop and deploy Ruby on Rails applications on a
Java runtime using JRuby. It includes JRuby,
Rails, Java, Tomcat, the GlassFish gem, MySQL, and
Subversion. It supports Windows, Linux, and Mac OS
X, so you can share the same Rails environment on
multiple platforms.

BundleMan manages the releases of an application built on versioned products under Subversion. An application is seen as a product suite defined using the Subversion svn:externals property. An application is a bundle of products. Products are versioned pieces of software. Releasing an application is about taking care of tagging the source repository, managing the version of each products, managing CHANGELOGs, creating a source package archive, and giving ways to maintain a release without blocking the trunk development.